US4772501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet wiper natural acid preservation system
Assignee: Fort James Corp
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Filing: 1987-12-03
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Granted: 1988-09-20
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Expires: 2007-12-03
Abstract
Abstract A wet wiper product of the type having a fibrous wipe, a liquid preservative composition, and an enclosure for the fibrous wipe and the liquid preservative composition. The liquid preservative composition consists essentially of: (a) a mixture of citric acid and sorbic acid as the preservative component; (b) water; and (c) optional ingredients selected from the group consisting of skin moisturizers and fragrance compounds.
Inventors
- 👤 Dale H. Johnson
- 👤 Joseph H. Miller
- 👤 Jack H. Propp
- 👤 Victor Turoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:05
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/005; A; A45; A45D; A45D44/00; D06M13/10; D06M13/184; D06M13/207; Y; Y10; Y10S; Y10S206/00; Y10S206/812; Y10T; Y10T428/00; Y10T428/23; Y10T428/237; Y10T442/00; Y10T442/60; Y10T442/69; Y10T442/692
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
54 words
In a wet wiper product of the type comprising a fibrous wipe, a liquid preservative composition, and a means enclosing the fibrous wipe and the liquid preservative composition, the improvement comprising a liquid preservative composition consisting essentially of: (a) a mixture of citric acid and sorbic acid as the preservative component; and (b) water.
Claim 2
Dependent Claim
54 words
In a wet wiper product of the type comprising a fibrous wipe, a liquid preservative composition, and a means enclosing the fibrous wipe and the liquid preservative composition, the improvement comprising a liquid preservative composition consisting essentially of: (a) a mixture of citric acid and sorbic acid as the preservative component; and (b) water.
Claim 3
Dependent Claim
31 words
The wet wiper product of claim 1, wherein the sorbic acid is present in the liquid preservative composition in the range of about 0.01 wt. % to about 0.20 wt. %.
Claim 4
Dependent Claim
31 words
The wet wiper product of claim 1, wherein the citric acid is present in the liquid preservative composition in the range of about 0.1 wt. % to about 0.5 wt. %.
Claim 5
Dependent Claim
55 words
The wet wiper product of claim 1, wherein the sorbic acid is present in the liquid preservative composition in the range of about 0.01 wt. % to about 0.20 wt. % and the citric acid is present in the liquid preservative composition in the range of about 0.1 wt. % to about 0.5 wt. %.
Claim 6
Dependent Claim
37 words
The wet wiper product of claim 1, wherein the weight percent ratio of citric acid to sorbic acid in the liquid preservative composition is in the range of about 20 to 1 to about 1 to 1.
Claim 7
Dependent Claim
36 words
The wet wiper product of claim 1, wherein the liquid preservative composition has about 0.05 wt. % to about 0.10 wt % sorbic acid and about 0.3 wt. % to about 0.5 wt % citric acid.
Claim 8
Dependent Claim
19 words
The wet wiper product of claim 1, wherein the pH of the liquid preservative composition is below about 3.5.
Claim 9
Dependent Claim
25 words
The wet wiper product of claim 1, wherein the pH of the liquid preservative composition is in the range of about 2.8 to about 3.0.
Claim 10
Dependent Claim
26 words
The wet wiper product of claim 1, wherein the fibrous wipe comprises fibers selected from the group consisting of cellulosic fibers, synthetic fibers, and combinations thereof.
Claim 11
Dependent Claim
16 words
The wet wiper product of claim 9, wherein the fibers are bound with a polymeric binder.
Claim 12
Dependent Claim
15 words
The wet wiper product of claim 10, wherein the polymeric binder is a latex binder
Claim 13
Dependent Claim
13 words
The wet wiper product of claim 1, wherein the fibrous wipe is air-laid.
Claim 14
Dependent Claim
13 words
The wet wiper product of claim 1, wherein the fibrous wipe is wet-laid.
References Cited (Backward Citations)
US4732797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |